M3 Inc., the nation’s top-performing blue-chip stock this year, is poised to climb further in the long run thanks to rising demand for online health care services, investors say.

The company’s shares are up 84 percent in 2020 after rallying 124 percent last year, helped by its addition to the Nikkei 225 Stock Average on Oct. 1.

The stock has surged some 6,400 percent since it was listed in September 2004, logging at least seven times the growth of all others currently listed on the blue-chip gauge over that period. It’s currently valued at around $39 billion.